Species	Reference gene ID	Possible function	Papers / DOI
Arabidopsis	At4g15950	DNA-dependent RNA polymerase catalyzes the transcription of DNA into RNA using the four ribonucleoside triphosphates as substrates.	NRPD4, a protein related to the RPB4 subunit of RNA polymerase II, is a component of RNA polymerases IV and V and is required for RNA-directed DNA methylation.; 2009; DOI: 10.1101/gad.1765209; PMID: 19204117; https://pubmed.ncbi.nlm.nih.gov/19204117/